package thread;

import java.util.*;

public class SyncAPIDemo2 {
    public static void main(String[] args) {
        List<Integer> c = Collections.synchronizedList(new ArrayList<>());
//        List<Integer> c = Collections.synchronizedList(new LinkedList<>());
//        Set<Integer> c = Collections.synchronizedSet(new HashSet<>());
        Thread t1 = new Thread(){
            public void run(){
                for (int i=0;i<1000;i++){
                    c.add(i);
                }
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                for (int i=1000;i<2000;i++){
                    c.add(i);
                }
            }
        };
        t1.start();
        t2.start();

        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(c.size());
        System.out.println(c);
    }
}
